Could antibacterial soap kill hepatitis c?

NO. Hepatitis C is an RNA virus circulating in your bloodstream and causes inflammation of the liver. Although washing your hands is great for killing bacteria, it doesn't kill the hepatitis C virus (HCV). HCV is contracted by way of the blood stream (i.e. IV drugs and sharing needles, blood transfusions before the early 1990's, tattoos and even sexually, etc). We can cure hepatitis C > 90% now.